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<TITLE>RE: [cisco-voip] CCM and QOS</TITLE>
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<P><FONT SIZE=2>Another possibility is that the 3550's use FIFO queueing on the ingress, that could be a reason why you are seeing this. As Ronald mentioned make sure mls qos is enabled, and your COS to DSCP and DSCP to COS Mappings are correct, since you used autoqos you should be fine.<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: cisco-voip-bounces@puck.nether.net on behalf of Ronald Heitmann<BR>
Sent: Fri 7/1/2005 9:38 AM<BR>
To: Phillips, Danny<BR>
Cc: cisco-voip@puck.nether.net<BR>
Subject: Re: [cisco-voip] CCM and QOS<BR>
<BR>
Hi Danny,<BR>
<BR>
the displayed "queuing type: fifo" has no relevance, since the<BR>
Catalyst-Switch(es) use hardware-based forwarding/queuing with WRR- or<BR>
SRR-strategy. You're config should work fine, if "mls qos" is enabled<BR>
globally!<BR>
Choosing another software-queuing strategy (fair-queue,<BR>
priority-queuing, custom-queuing, llq, etc.) will have no effect since<BR>
there is no software-queuing in these boxes. It seems like cisco has<BR>
forgotten to remove some cli-stuff while porting the ios-code from the<BR>
router platform.<BR>
<BR>
Regards,<BR>
//Ronald<BR>
<BR>
Phillips, Danny schrieb:<BR>
<BR>
> Below is the settings on my 3550 when I turned on "auto QOS". When I<BR>
> look at the interface using the show interface command, the queuing<BR>
> says that it is fifo. My question is should I turn this off using the<BR>
> "fair-queue" command?<BR>
><BR>
> interface FastEthernet0/1<BR>
><BR>
> switchport trunk encapsulation dot1q<BR>
><BR>
> switchport trunk native vlan 31<BR>
><BR>
> switchport trunk allowed vlan 31,231<BR>
><BR>
> switchport mode trunk<BR>
><BR>
> switchport voice vlan 231<BR>
><BR>
> mls qos trust device cisco-phone<BR>
><BR>
> mls qos trust cos<BR>
><BR>
> auto qos voip cisco-phone<BR>
><BR>
> wrr-queue bandwidth 10 20 70 1<BR>
><BR>
> wrr-queue min-reserve 1 5<BR>
><BR>
> wrr-queue min-reserve 2 6<BR>
><BR>
> wrr-queue min-reserve 3 7<BR>
><BR>
> wrr-queue min-reserve 4 8<BR>
><BR>
> wrr-queue cos-map 1 0 1<BR>
><BR>
> wrr-queue cos-map 2 2 4<BR>
><BR>
> wrr-queue cos-map 3 3 6 7<BR>
><BR>
> wrr-queue cos-map 4 5<BR>
><BR>
> priority-queue out<BR>
><BR>
> spanning-tree portfast<BR>
><BR>
> spanning-tree bpduguard enable<BR>
><BR>
> end<BR>
><BR>
> Danny<BR>
><BR>
>------------------------------------------------------------------------<BR>
><BR>
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> <BR>
><BR>
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